Improvement in compounds for removal of scale from steam-boilers



UNITED STATES PATENT OEEIeE.

WILLIAM THOMAS GRANT, OF NEELYVILLE, ILLINOIS.

- IMPROVEMENT IN COMPOUNDS FOR REMOVAL OF SCALE FROM STEAM-BOILERS.

Specification forming part of Letters Patent No. 1 11,198, dated January24, 1871.

To all whom it may concern:

Be it known that I, WILLIAM THOMAS GRANT, of Neelyville, in the countyof Morgan, and in the State of Illinois, have invented certain new anduseful Improvements in Oompound for Removing Lime-Scales in Steam-Boilers; and do hereby declare that the following is a full, clear, andexact description thereof.

The nature of my invention consists in a compound for removinglime-scales in boilers, or preventing the formation thereof, and whichcompound also stimulates the generation of steam in steam-boilers.

It is composed of the following ingredients, namely: ground shells,ground bones, and coal-tar, or fluid taken from the tar by distillation.These ingredients are mixed in about the following proportions: Equalparts of ground shells and ground bone; then take twelve pounds of thismixture to each gallon of tar, or any part of the same that may be takenor separated from it by distillation. This compound is not corrosive,and will not injure the boiler. It will remove lime-scales insteam-boilers by dissolving and loosening the scale, and prevent theformation of limescale by its use. At the same time it will stimulatethe generation of steam.

The charge for a boiler of ordinary capacity is from five to fifteenpounds. From the time the first charge is put in, a perceptibledifference in making steam is manifest. Any boiler by its use, from thefirst time it is introduced, will make more steam with less fuel thanWithout it.

I do not confine myself to the precise proportions of the ingredientsabove mentioned, as they may in some cases be varied with greatadvantage.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The within-described compound, consisting of ground shells, ground bone,and coal-tar, or any of its distillates, substantially for the purposesherein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this23d day of July, A. D. 1870.

WILLIAM THOMAS GRANT.

Witnesses:

JOHN G. EnMoNDsoN, THos. H. J ENESON.

